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Mon, 09 Mar 2026 04:06:54 -0700 (PDT) Received: from oss.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-359bcc2d096sm4067057a91.14.2026.03.09.04.06.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Mar 2026 04:06:54 -0700 (PDT) Date: Mon, 9 Mar 2026 16:36:44 +0530 From: Mohd Ayaan Anwar To: "Russell King (Oracle)" Cc: Andrew Lunn , Alexandre Torgue , Andrew Lunn , AngeloGioacchino Del Regno , Chen-Yu Tsai , "David S. Miller" , Eric Dumazet , Frank Li , imx@lists.linux.dev, Jakub Kicinski , Jan Petrous , Jonathan Hunter , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, Maxime Chevallier , netdev@vger.kernel.org, Paolo Abeni , Pengutronix Kernel Team , s32@nxp.com, Samuel Holland , Sascha Hauer , Yao Zi Subject: Re: [PATCH net-next v2 0/7] net: stmmac: start to shrink memory usage Message-ID: References: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzA5MDEwMiBTYWx0ZWRfX2cmX1wJfQSlC lnkYQw8aeyMvQ4cwBXHulDeN+2H5gJERBGr4S+B/P/Qu/AwS96wVO07Yck9ICuyt5BvEZsN2p4O 2zchTglwifZTOiAHheP3TCgMs1Gn/nLjAV1l24KZt486FRsvpgDt94q+VBm22SFjRd9XmtsAE7A pUlPfXHm4tIEIv1PZA6QuuR8GE/ZI1NOol9MR/sUG7uHwttD/vJIR8rVo4eUCl9gbzpOv2Eev+v BAh6keNno5tV/i7+7TUiun/RRXQyibOfYGXnzfRg37mN6+TnPewRecvP+/YbyxWYW/SRW8P63d1 ujnAq4+nI6IjPTecClVU8ZIo7Ug/OqFvJPubE/ixUrav5p01lO58739zbi5mEOAeVxBybnS9Zb7 XvMhnVYeFTIYAFO1vgSNFg+hnaALT9jMYtHlIMExmA1mrc/1J2mPKPzVQxMKFLtEU+kQ7StYmTA w4AJ0BXIHRvbXKAEMpw== X-Proofpoint-ORIG-GUID: Wv7NVghL8PkonkHRcFgb3ckA-3Uhz9FK X-Proofpoint-GUID: Wv7NVghL8PkonkHRcFgb3ckA-3Uhz9FK X-Authority-Analysis: v=2.4 cv=e7sLiKp/ c=1 sm=1 tr=0 ts=69aea9d0 cx=c_pps a=MTSHoo12Qbhz2p7MsH1ifg==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=kj9zAlcOel0A:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=EUspDBNiAAAA:8 a=J-7NsHqoITSIJWJjikQA:9 a=CjuIK1q_8ugA:10 a=zZCYzV9kfG8A:10 a=GvdueXVYPmCkWapjIL-Q:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-09_03,2026-03-06_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 suspectscore=0 spamscore=0 bulkscore=0 impostorscore=0 malwarescore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603090102 Hi Russell, On Mon, Mar 09, 2026 at 09:38:26AM +0000, Russell King (Oracle) wrote: > Hi, > > Start shrinking stmmac's memory usage by avoiding using "int" for > members that are only used for 0/1 (boolean) values, or values that > can't be larger than 255. > > In addition, as struct stmmac_dma_cfg is approximately a cache line, > shrinks below a cache line as a result of this patch set, and is > required, there is no point separately allocating this from > struct plat_stmmacenet_data. Embed it into the end of this struct > and set the existing pointer to avoid large wide-spread changes. > > Lastly, add documentation for struct stmmac_dma_cfg, and document > the stmmac clocks as best we can given the driver history. > > v2: > - fix error in commit message for patch 5 > - fix typo in comment in patch 6 > No issues found with v1 on QCS9100 Ride R3, so feel free to add: Tested-by: Mohd Ayaan Anwar Ayaan